pcsx2/plugins/GSdx/GSWndWGL.cpp

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/*
* Copyright (C) 2007-2012 Gabest
* http://www.gabest.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "GSWndWGL.h"
#ifdef _WIN32
static void win_error(const char* msg, bool fatal = true)
{
DWORD errorID = ::GetLastError();
if (errorID)
fprintf(stderr, "WIN API ERROR:%ld\t", errorID);
if (fatal) {
MessageBox(NULL, msg, "ERROR", MB_OK | MB_ICONEXCLAMATION);
throw GSDXRecoverableError();
} else {
fprintf(stderr, "ERROR:%s\n", msg);
}
}
GSWndWGL::GSWndWGL()
: m_NativeWindow(NULL), m_NativeDisplay(NULL), m_context(NULL)
{
}
// Used by GSReplay. Perhaps the stuff used by GSReplay can be moved out? That way all
// the GSOpen 1 stuff can be removed. But that'll take a bit of thinking.
LRESULT CALLBACK GSWndWGL::WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_CLOSE:
// This takes place before GSClose, so don't destroy the Window so we can clean up.
ShowWindow(hWnd, SW_HIDE);
// DestroyWindow(hWnd);
return 0;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
}
void GSWndWGL::CreateContext(int major, int minor)
{
if (!m_NativeDisplay || !m_NativeWindow)
{
win_error("Wrong display/window", false);
exit(1);
}
ASSERT(major >= 3);
// GL2 context are quite easy but we need GL3 which is another painful story...
m_context = wglCreateContext(m_NativeDisplay);
if (!m_context)
win_error("Failed to create a 2.0 context");
// FIXME test it
// Note: albeit every tutorial said that we need an opengl context to use the GL function wglCreateContextAttribsARB
// On linux it works without the extra temporary context, not sure the limitation still applied
AttachContext();
// Create a context
int context_attribs[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, major,
WGL_CONTEXT_MINOR_VERSION_ARB, minor,
// FIXME : Request a debug context to ease opengl development
// Note: don't support deprecated feature (pre openg 3.1)
//GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB | GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
#ifdef ENABLE_OGL_DEBUG
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| WGL_CONTEXT_DEBUG_BIT_ARB
#else
| GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
#endif
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,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
if (!wglCreateContextAttribsARB)
win_error("Failed to init wglCreateContextAttribsARB function pointer");
HGLRC context30 = wglCreateContextAttribsARB(m_NativeDisplay, NULL, context_attribs);
if (!context30) {
win_error("Failed to create a 3.x context with standard flags", false);
// retry with more compatible option for (Mesa on Windows, OpenGL on WINE)
context_attribs[2*2+1] = 0;
context30 = wglCreateContextAttribsARB(m_NativeDisplay, NULL, context_attribs);
}
DetachContext();
wglDeleteContext(m_context);
if (!context30)
win_error("Failed to create a 3.x context with compatible flags");
m_context = context30;
fprintf(stderr, "3.x GL context successfully created\n");
}
void GSWndWGL::AttachContext()
{
if (!IsContextAttached()) {
wglMakeCurrent(m_NativeDisplay, m_context);
m_ctx_attached = true;
}
}
void GSWndWGL::DetachContext()
{
if (IsContextAttached()) {
wglMakeCurrent(NULL, NULL);
m_ctx_attached = false;
}
}
bool GSWndWGL::Attach(void* handle, bool managed)
{
m_NativeWindow = (HWND)handle;
m_managed = managed;
OpenWGLDisplay();
CreateContext(3, 3);
AttachContext();
m_swapinterval = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
PopulateGlFunction();
UpdateWindow(m_NativeWindow);
return true;
}
void GSWndWGL::Detach()
{
// Actually the destructor is not called when there is only a GSclose/GSshutdown
// The window still need to be closed
DetachContext();
if (m_context) wglDeleteContext(m_context);
m_context = NULL;
CloseWGLDisplay();
// Used by GSReplay.
if (m_NativeWindow && m_managed)
{
DestroyWindow(m_NativeWindow);
m_NativeWindow = NULL;
}
}
void GSWndWGL::OpenWGLDisplay()
{
GLuint PixelFormat; // Holds The Results After Searching For A Match
PIXELFORMATDESCRIPTOR pfd = // pfd Tells Windows How We Want Things To Be
{
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
PFD_DOUBLEBUFFER, // Must Support Double Buffering
PFD_TYPE_RGBA, // Request An RGBA Format
32, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
0, // 8bit Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
0, // 24Bit Z-Buffer (Depth Buffer)
8, // 8bit Stencil Buffer
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
};
m_NativeDisplay = GetDC(m_NativeWindow);
if (!m_NativeDisplay)
win_error("(1) Can't Create A GL Device Context.");
PixelFormat = ChoosePixelFormat(m_NativeDisplay, &pfd);
if (!PixelFormat)
win_error("(2) Can't Find A Suitable PixelFormat.");
if (!SetPixelFormat(m_NativeDisplay, PixelFormat, &pfd))
win_error("(3) Can't Set The PixelFormat.", false);
}
void GSWndWGL::CloseWGLDisplay()
{
if (m_NativeDisplay && !ReleaseDC(m_NativeWindow, m_NativeDisplay))
win_error("Release Device Context Failed.");
m_NativeDisplay = NULL;
}
//TODO: GSopen 1 => Drop?
// Used by GSReplay. At least for now.
// More or less copy pasted from GSWndDX::Create and GSWndWGL::Attach with a few
// modifications
bool GSWndWGL::Create(const string& title, int w, int h)
{
if(m_NativeWindow) return false;
m_managed = true;
WNDCLASS wc;
memset(&wc, 0, sizeof(wc));
wc.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
wc.lpfnWndProc = WndProc;
wc.hInstance = theApp.GetModuleHandle();
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
wc.lpszClassName = "GSWndOGL";
if (!GetClassInfo(wc.hInstance, wc.lpszClassName, &wc))
{
if (!RegisterClass(&wc))
{
return false;
}
}
DWORD style = WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_OVERLAPPEDWINDOW | WS_BORDER;
GSVector4i r;
GetWindowRect(GetDesktopWindow(), r);
// Old GSOpen ModeWidth and ModeHeight are not necessary with this.
bool remote = !!GetSystemMetrics(SM_REMOTESESSION);
if (w <= 0 || h <= 0 || remote)
{
w = r.width() / 3;
h = r.width() / 4;
if (!remote)
{
w *= 2;
h *= 2;
}
}
r.left = (r.left + r.right - w) / 2;
r.top = (r.top + r.bottom - h) / 2;
r.right = r.left + w;
r.bottom = r.top + h;
AdjustWindowRect(r, style, FALSE);
m_NativeWindow = CreateWindow(wc.lpszClassName, title.c_str(), style, r.left, r.top, r.width(), r.height(), NULL, NULL, wc.hInstance, (LPVOID)this);
if (m_NativeWindow == NULL) return false;
OpenWGLDisplay();
CreateContext(3, 3);
AttachContext();
m_swapinterval = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
PopulateGlFunction();
return true;
}
//Same as DX
GSVector4i GSWndWGL::GetClientRect()
{
GSVector4i r;
::GetClientRect(m_NativeWindow, r);
return r;
}
void* GSWndWGL::GetProcAddress(const char* name, bool opt)
{
void* ptr = (void*)wglGetProcAddress(name);
if (ptr == NULL) {
fprintf(stderr, "Failed to find %s\n", name);
if (!opt)
throw GSDXRecoverableError();
}
return ptr;
}
//TODO: check extensions supported or not
//FIXME : extension allocation
void GSWndWGL::SetVSync(int vsync)
{
// m_swapinterval uses an integer as parameter
// 0 -> disable vsync
// n -> wait n frame
if (m_swapinterval) m_swapinterval(vsync);
}
void GSWndWGL::Flip()
{
SwapBuffers(m_NativeDisplay);
}
void GSWndWGL::Show()
{
if (!m_managed) return;
// Used by GSReplay
SetForegroundWindow(m_NativeWindow);
ShowWindow(m_NativeWindow, SW_SHOWNORMAL);
UpdateWindow(m_NativeWindow);
}
void GSWndWGL::Hide()
{
}
void GSWndWGL::HideFrame()
{
}
// Returns FALSE if the window has no title, or if th window title is under the strict
// management of the emulator.
bool GSWndWGL::SetWindowText(const char* title)
{
if (!m_managed) return false;
// Used by GSReplay.
::SetWindowText(m_NativeWindow, title);
return true;
}
#endif